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fixed thread safety problem in Viewport (#438)

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recycled variables were accessed non synchronized (and therefore non
thread safe) causing errors once multiple threads were used interacting
with the Viewport
This commit is contained in:
lucaosten 2017-11-03 19:04:09 +01:00 committed by Emux
parent d23bca9c7f
commit f94c665b27
2 changed files with 6 additions and 6 deletions
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2
vtm/src/org/oscim/map/ViewController.java
View File

@ -118,7 +118,7 @@ public class ViewController extends Viewport {
mPos.y = mMinY;
}
private Point applyRotation(double mx, double my) {
private synchronized Point applyRotation(double mx, double my) {
if (mPos.bearing == 0) {
mMovePoint.x = mx;
mMovePoint.y = my;

10
vtm/src/org/oscim/map/Viewport.java
View File

@ -210,7 +210,7 @@ public class Viewport {
}
}
protected void unproject(float x, float y, float[] coords, int position) {
protected synchronized void unproject(float x, float y, float[] coords, int position) {
mv[0] = x;
mv[1] = y;
mv[2] = -1;
@ -242,7 +242,7 @@ public class Viewport {
* the visible part of the map. Sets box to map coordinates:
* xmin,ymin,xmax,ymax
*/
public Box getBBox(Box box, int expand) {
public synchronized Box getBBox(Box box, int expand) {
if (box == null)
box = new Box();
@ -280,7 +280,7 @@ public class Viewport {
* @param y screen coordinate
* @return the corresponding GeoPoint
*/
public GeoPoint fromScreenPoint(float x, float y) {
public synchronized GeoPoint fromScreenPoint(float x, float y) {
fromScreenPoint(x, y, mMovePoint);
return new GeoPoint(
MercatorProjection.toLatitude(mMovePoint.y),
@ -301,7 +301,7 @@ public class Viewport {
* @param x screen coordinate
* @param y screen coordinate
*/
public void fromScreenPoint(double x, double y, Point out) {
public synchronized void fromScreenPoint(double x, double y, Point out) {
unprojectScreen(x, y, mu);
double cs = mPos.scale * Tile.SIZE;
@ -363,7 +363,7 @@ public class Viewport {
*
* @param out Point projected to screen coordinate
*/
public void toScreenPoint(double x, double y, boolean relativeToCenter, Point out) {
public synchronized void toScreenPoint(double x, double y, boolean relativeToCenter, Point out) {
double cs = mPos.scale * Tile.SIZE;
double cx = mPos.x * cs;